Toy building block



FIG. 1 is a front perspective view of a toy building block showing my new design,

FIG. 2 is a rear perspective view thereof,

FIG. 3 is an elevation of one side thereof, the elevation of the opposite side being a mirror image of FIG. 3,

FIG. 4 is a rear elevation thereof,

FIG. 5 is a top plan view thereof, the bottom of the block being plain and unornamented,

FIG. 6 is a front perspective view of a modified embodiment of the design shown in FIGS. 1 through 5,

FIG. 7 is a front elevation thereof,

FIG. 8 is an elevation of one side thereof, the elevation of the opposite side being a mirror image of FIG. 8,

FIG. 9 is a rear elevation thereof, and

FIG. 10 is a top plan view thereof, the bottom of the block being plain and unornamented. 

The ornamental design for a toy building block, as shown and described. 